Chair-iron



- D. R. COLLIER.

\ CHAIR IRON.

APPLICATION FILED DEC. 19, 19W.

Patented Apr. 13, 1920.

3 SHETSSHEET 1.

550 776 eys,

D. R. COLLIER.

CHAIR IRON.

APPLICATION FILED DEC. is, 19m.

1,336,510. Patented Apr. 13,1920. 7'

3 SHEETS-SHEET 2.

D. R. COLLIER.

CHAIR IRON.

'APPLICATION FILED DEC-19, 191s.

Patented Apr. 13, 1920.

3 SHEETS-SHEET 3.

z w mw UNI E STATES PATENT OFFICE.

DAVID R. COLLIER, OF GARDNER, MASSACHUSETTS, ASSIG NOR TO COLLIER-KEYWORTH. COMPANY, OF GARDNER, MASSACHUSETTS A CORPORATION OF MASSACHUSETTS.

Specification of letters Patent.

CHAIR-IRON.

Patented Apr. 13-, 1920.

. v i Application filed December 19, 1918. Serial No. 267,458.

To all whom-it may concern:

Be it known that 1, DAVID R. COLLIER, a citizen of the United States, residing at Gardner, in the county of Worcester and State of Massachusetts, have invented new and useful Improvements in Chair-Irons, of which the following is a specification.

I This invention has for its object to provide a chair iron which is simple and inex pensive in constructionand which will per mit the back to yield relatively to the seat. ()ne of the features of advantage incident to the construction of the iron is: that most of the parts may be stamped out of sheet metal and bent or drawn into shape, thereby enabling the production of a light and durable iron. l

On the accompanying drawings- Figure 1 represents in side elevation at chair embodying the invention.

Fig. 2 represents a planview of the iron.

Fig. 3 represents a section on the line 33 of Fig. 2 and shows the parts in-their normal positions.

.25 Fig. 4 represents a similar section with the back of the chair at the end of its rear: ward movement. I

Fig; 5 represents a section on the line 55 of Fig. 2 and shows in section a portion of the seat.- A

Fig. 6 represents a section on the line; 6-6 of Fig. 3 and shows the means for permitting adjustment of the back standard.

Fig. 7 shows the rear end of the forked rocker. V

Fig. 8 represents a section on the line 88 oiFig. 1 and illustrates the'means by which adjustment of the back in relation to the standard is permitted.

Fig. 9 represents a section 'on the line Fig. 10 illustrates the plate which is afiixed to the back.

Referring to Fig. 1, it will be observed '45 that the chair as illustrated is provided with V a pedestal, in the hubof which is supported the spindle 20. Preferably, though not necessarily, the hub and the spindle 20are constructed as illustrated and described in my application Serial No. 2324020, filed May 2,

---=1 918.' ,In accordance with the construction described in said application, the spindle ugly be adjusted vertically in reference to the pedestal-,and after adjustment'itmay rotate freely without causing any vertical movement ofthe spindle.

Afiixed to the upper end of the spindle, there is an open head indicated as a( whole in Fig. l at 21. This head is formed of a flat metal strip .bent in to the form of a yoke with the horizontal transverse bar 22 and with upstanding sides 23. Between the sides 23,23, there is a transverse sheet metal reinforcement or bridge 25 the, ends of which are down-turned, as shown in Fig. 5,

and secured by rivets 26 to the sides 23 of the head. The spindle 20 has a bead 27 which engages the transverse bar 22, through an aperture in which the spindle is ,passed; and the upper extremity of the spindle is inserted in an aperture in. the cross-bar 25 and its end is upset therein as shown in Fig. 5. The head is thus rigidly secured to and supported upon the upper end of the spindle so as to rotate therewith.

The head supports the spider, which in the 7 present instance consists of the two bars 28, 28, whichfare formed of sheet metal and V bent into proper shape. Each bar is formed with a horizontal web 29 and a vertical web 30. The horizontal webs 29 extend toward each other and they rest upon the upper extremities of the sides of the-head.

The vertical webs 30 are secured to the sides v28 by rivets 31, 31. The chair seat 32rests upon the spider and is secured thereto by wood screws indicated at 33. By reason of this construction, .the seat, the spider, the head-and the spindle are all secured rigidly together. The back of the chair, which is indicated at 34, may be oi any suitable shape in accordance with the uses to which the chair. is to be put. As illustrated, it consists of a curved wooden member which is adjustably supported by a standard 35. Of course these parts need not be made out of wood, although that is the material of which these parts are ordinarily made. The back standard 35 near its upper end i s provided with a longitudinal vertical slot 36, audio the rear face of the back 34 there is secured a plate 37 formed with loop members 38 which project into the slot 36, thereby to preclude any rocking movement of, the back relatively to the standard.

conveniently located, through which screws 39 may be; passed into the back 34, The plate is provided with a rearwardly offset portion 40 {having a square aperture 41 through which a bolt 42 extends rearward'ly. The bolt is inserted through the plate-before the latter is attached'to the back, so

,ofise't portion 40. .bolt is angular so as to fit the aperture 41. On the endof 'the bolt which is passed through the, slot 36, there is a washer 43 that, when the latter is place, the head of the bolt occupies the recess fBrmed by the Adjacent'the head the is forked. It consists of the two members 46, 46, which at their rear ends are brought into facial contact and are firmly united by rivets'47, 47 The forward portions of the members .46 are spaced apartand are parallel so as to fit between the sides 23 of the head. Apintle'48ser'ves as the pivot or fulcrum for the rocker and it is passed through apertures in themembers 46. and in the sides of the head, the ends of the pintle being upset to form heads 49 to prevent dislocation thereof. It will be noted that the axis of the pintle 48 preferably intersects the axis of the spindle and is perpendicular thereto.- The rear end of the rocker, as shown in side elevation, hasa lateral or upward extension in which there is formed an openslot or notch 50. The lower end-of the standard is slit or bifurcated so as to fit over the end of the rocker ind it has-a pintle 51 which occupies the.

lower end of the slot 50. Below .theslot 50 there is an arcuate slot ,52 whose center is coincident with the pintle 51, and a bolt passed through'the lower extremity of the standard occupies ;the slot 52. The headed end of the bolt is square or angular, so that, when forced into one'of the arms. of the standard, it will. not rotate. Uponthe threaded end of the bolt there is a loose washer 54 and. a nut 55 which is; similar to the .nut 44 previouslydescribed; Bytightehingthe nut, the'lower end of the standard maybe tightly clam ed against movement. he means for a ording adjustment of the standard in reference to the rocker isin general not an unusual construction. The spring mechanism for the rocker 1s so airangedas to exert a yielding pressure against the rocker to hold its rear placed endnormally in elevated position as shown in Fig.3, but to permit it to be depressed against the pressure of the spring to the position shown in Fig. 4, the latter illustrating thev lower limit of the movement of the rocker. Tothe head there is secured an upwardly projecting plateor abutment 56, the lower end of which is providedwith lugs 57 which pass through; holes in the bottom plate .of the head and which are upset as shown so as to hold the plate 56 in place. This plate also is braced by its 7 engagement with one of the side edges of the cross brace or plate 25 and it is located l between the two members of the rocker which straddle it. The upper portion of the plate 56 has an aperture through which a bolt 58 loosely passes, the head- 59 of the bolt engaging the rear face of said plate Upon the end of thebolt, there is. a

tubular s leeve nut 60 having a cross-pin 61- to facilitate its, rotation. A compression spring 62 encircles the bolt and its front end bears againsta flanged sheet-metal cir- .cular spring plate 63 which in turn bears againstthe end of the nut 60. The other end of the spring engages a similar dished" plate: 64, and this latter plate is pressed by the spring against a trunnioned cross-bar 65, the trunnions of which are journaled in apertures formed in the members 46,0f the rocker. The rearward pressurejof the spring, which is exerted against the trunnioned plate 65, forces the rear end of the rocker upwardly until the upp'efedges of the members 46 thereof, which are in the rear of the pintle 48} engage and rest against the under sides of the horizontal webs of the spider. The front endsof the members 46' of the rocker project forwardly far enough in front of the pintle 48 to act 'as stops and limit the downward movement of the rear end of the rocker by their engagement with the horizontal webs of the spider. The construction which I have' thus illustrated'and described provides for the loca: tiolrof the spring mechanism in the central portion of the chair iron I the spindle. O f courseewhile l have shown but one spring, it is-apparent that at least two springs could be utilizedif; desired without departing from the spirit'and scope.

and directly over of the invention as expressed in the claims.

Various changes may be made in the details ofthe construction and arrangement of the parts .as illustrated and described without departing from the. spirit and scope of the invention defined in the claims.

Having thus explainedflthemature of any said invention and described a way of making and using the same, although-without attempting 'to set forth allofthe forms .in which it may be made orall of the modes of its use, what I claim is:

' 1. A chair iron comprising a yoke, 21.

' 20 the spider, and a spring-pressed back-suppintle supported by the sides of said yoke, a back-supporting rocker extending into the yoke and pivoted on the pintle, an abutment on the head, a member on the rocker, 5 a bolt engaged with the abutment and pass ing through said member, a nut on theebolt, and a spring interposed 'between'the nut.

- and the said member on the rocker.

2. A chair iron comprising a spindle, a

head thereon to which a chair seat may be afiixed, a back supporting rocker, and a pivot therefor supported by the head above and approximately intersecting the axis of the spindle.

3. A chair iron comprising a spider to which the seat may be afiixed, a spindle, a head consisting of an inverted yoke having its cross bar fixed upon the end of-the spindle and having its sides secured fixedly to porting rocker extending into the yoke and pivoted to the sides thereof. 4. A-chair iron comprising a spider to which the seat may be aflixed, a spindle, an open head on the end of the spindle, fixedly secured to the spider and having parallel members, a back-supporting rocker extending into, the head between said members. thereof, and a helical compression spring interposed between the rocker and the head.

A 'chair iron comprising a spider to which the seat may be affixed, a spindle,v an open head on the end of the spindle, and having the spider aflixed thereto, a forked back-supporting rocker extending into the open head, an abutment on said head locatedbetween the members of the rocker, and springmeclianism engaging the rocker and the abutment.- 40 6. A chair iron comprising an open head on which a seat may be fixedly secured, a pintle passing transversely through said head, a forked rocker having its members pivoted on said pintle and lying between the sides of said head,.a cross bar engaged with the members of said rocker, an abutment secured to said head and located between the members of the rocker, and a spring interposed between said cross bar' and said abutment.

7. A chair iron comprising an open head on which a seat may be fixedlyv secured, a pintle passing transversely through said head, a forked rocker having its'members pivoted on said pintleand lying between the sides of said head, a cross bar having its ends trunnioned in the members of the forked rocker, an abutment secured'to the head and located between the members ofthe rocker,

a bolt passing through apertures in the rocker and the abutment, a nut on the bolt, and a compression spring interposed between the cross bar and the nut.

. 8. A chair iron comprising an open head on which a sea may be fixedly secured, a I

pintle passing transversely through said head, aforked rocker; having its members pivotedon said pintle and lying between the I sides of said head, a cross bar having its ends trunnioned in the members of the i0 forked rocker, an abutment secured to the head and located between the members of the rocker, a bolt passing through apertures in the rocker and the abutment, spring plates respectively engaging the cross bar and the 5 nut, and compression means interposed be tween the spring plates;

9. A chair iron comprising an open head 5 on which a seat may be fixedly secured, a

pintle passing transversely through .said go I head, a forked rocker having its members pivotedom said pintle, a gross plate secured j tothe members of the rocker, an abutment secured to the head, and a compression spring exerting its force against the abutment and 5 the crossplate. v,1

10. A chair iron comprising a spindle, a head on the upper end thereof having upright members, means by which a seat may be fixedly secured to the head, a rocker pivoted t0 the members on the head to move about an axis substantially intersecting the axis of the spindle, and a compression spring mechanism engaging the head and the rocker and located above and across the spindle.

'11. A chair iron comprising a spindle, a' head on the upper end thereof, means by whicha seat may be fixedly secured to the head, a'rocker pivoted to the head to move about an axis substantially intersecting the axis of the spindle, a boltabove and intersecting the axis of the spindle, an abutment on the head engaging the headed endof the bolt, a nut on the end of thebolt, a member onthe rocker, and a spring interposed between said member and said nut.

12. A chair iron comprising a spindle, an inverted yoke-shaped head on the upper end thereof, an upstanding abutment onthe head, a transverse pintle passed through the head, a-forked back-supporting rocker pivoted on the pintle, a cross bar-arranged in the fork of the rocker, a compression spring arranged to exert its pressure against the abutment and the cross bar, and means on the head for engaging the rocker to limit its movement in opposite directions aboutithe pintle. r

13, A chair iron comprisinga spindle, an inverted yoke-shaped head on the upper end thereof, an upstanding abutment on the head, a transverse pintle passed through the head, a forked back-supporting rocker piv I oted on the pintle, a cross bar arranged, in;

the fork of the rocker, a compressionspring 7,

arranged to exert its pressure against the 4 abutment and the cross bar, and spider arms afiixed to the head and having webs overlapping the rocker to limit the oscillatory movement of the rocker. .20-

14. A chair-iron comprising a spider, an

open head riveted to the spider, a spindle ,secured to the head, an upstanding abutment plate affixed to the'head, a transverse pintle in the head, a forked rocker straddling the abutment plate and pivoted on the pintle, a cross-bar trunnioned to the rocker and arranged in the fork thereof, a bolt passing throughthe abutment plate and thesaid sides, a forked rocker having rearwardly convergent arms, the forward. ends of which are located between the upstanding i 4 sides of the head, a cross bar extending between the divergent ends of the rocker arms, and a pintle pivotally connecting said rocker to' the said upstanding sides of the head adjacent said cros'sban,

. v16. A chair iron comprising an inverted yoke with upstanding sides, a pintle supported by said sides, a rearwardlyextending and a helical compression spring exerting pressure against said abutment and said ard' bifurcated at its lower end and straddling the convergent ends of the rocker arms. 17L A chair iron comprising a spindle, an upstanding yoke thereon on which a seat may be fixedly secured, a rearwardly-extending back-supporting rocker extending into the yoke and pivoted to the arms thereof, a stationary abutment on the yoke, a bolt engaged with the abutment and having an adjustable nut thereon, a compression spring having one end engaging said nut, and means on the rocker engaging the other end of said spring.

In testimony signature. A

whereof I have afiixed my DAVID R. coLLIER crossbar, in combination with a back stand- I 

